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    Retro Cutting Holes in Bulkheads
    by Xcpilot πŸ‡¬πŸ‡§ ( Leading Seaman)
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    42 Posts 41 Replies 27 Photos 112 Likes
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    Colin H
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    πŸ“ Retro Cutting Holes in Bulkheads
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 3 hours ago
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    Nice and neat, well done.
    Cheers Colin.
    1
    Fair winds and calm waters, COLIN.
    Xcpilot
    Leading Seaman
    πŸ“ Retro Cutting Holes in Bulkheads
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    Just to conclude this thread I finally retro fitted some holes in the bulkheads of my fast patrol boat today to install water cooling.

    Below in one picture are the pin drills, reamers and the micro sander used to make some very neat holes for the tubing. I started small with a sharp 1.5mm drill in the pin drill to make the pilot holes. Next I enlarged the holes up to 3mm which allowed me to start using a step reamer which neatly enlarged the holes up to 6mm for the tubing. I highly recommend a set of step reamers if you don’t own some already, the small set shown in the picture were purchased on eBay quite cheaply, they cut holes well as they are very sharp. Finally my newly fabricated electric toothbrush (turned micro sander) tidied things up.

    When using the small hand tools I found I needed to take my time, it also gave my fingers and thumbs a good work out. It is was worth it tho as I ended up with some very tidy holes in exactly the right places.😎

    I would like to thank all those who contributed some great ideas and solutions to this thread.

    ATB JT 😊
    3
    Compare yourself with others and you either will become vain or bitter.
    Colin H
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    πŸ“ Retro Cutting Holes in Bulkheads
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 3 hours ago
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    Thanks Doug. I'll have a look at the data.
    Cheers Colin.
    1
    Fair winds and calm waters, COLIN.
    RNinMunich
    Fleet Admiral
    πŸ“ Retro Cutting Holes in Bulkheads
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    Country: πŸ‡©πŸ‡ͺ Germany
    Online: 16 seconds ago
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    Ooops! Forgot the cable data sheetπŸ€”
    Well, it WAS late here!
    Cheers, Doug 😎
    2
    Young at heart πŸ˜‰ Slightly older in other places.;-/ Cheers Doug
    Colin H
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    πŸ“ Retro Cutting Holes in Bulkheads
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    Thanks Doug. I have spent the last few days with my grandchildren, building with lego. I'm home now so hopefully I'll be able to get on with the refit.
    Cheers Colin.
    1
    Fair winds and calm waters, COLIN.
    RNinMunich
    Fleet Admiral
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    Country: πŸ‡©πŸ‡ͺ Germany
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    Hi Colin,
    Sorry to hear thatπŸ€”
    My company flogged me to (almost) burn out at 65+.
    Mainly to complete my Swan Song project; complete COMMS systems for the 7 new ships ordered by the Qatar Navy from the Fincantieri yard in Italy.
    A project I'd worked on for over three years from concept to negotiations with navy and yard.
    Nothing succeeds like success they say! πŸ€”πŸ™„
    Believe me, at the end I was happy to go and about a year later I turned down some consultant work. I read through the proposal and suddenly realised - I wasn't interested anymore! I WAS FREE!😊

    Ref cables; it's 2.5mmΒ² and good for 32Amps πŸ˜‰ Type SILI-1V 2,5.
    Data sheet attached. You can brush up on your German😁
    BTW: The fuses fitted are the red 10A. If you reckon she'll drink more than 10A fit the yellow 20A fuses. Not sure now but I think I put a pair in your package!? Pesky memory!☹️
    Glad to see I fitted the heat sink. I only have pics and video of the tests without it!
    Cheers, Doug 😎
    2
    Young at heart πŸ˜‰ Slightly older in other places.;-/ Cheers Doug
    mturpin013
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    Still here but no boat construction recently, however here's my solution for drilling holes in bulkheads, note that some "bits" are made from screwdriver bits which are ground into drill bits, there is also an adaptor for the commonly available mini screwdriver sets /blades often screws end up in the most inaccessible places as I have found during the crash tender build, not everything can be planned. The main angle adaptor is driven by a cordless drill
    4
    Colin H
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    Hi there Doug, I was put on the work scrapheap in 2005.
    Medically retired due to health and safety issues with my arthritis.
    Even though I was works manager and could have delegated any physical jobs.
    As a protype engineer I found it hard to be so cruelly dumped. But it has given me the time for this lovely hobby.
    And I'm still learning.
    There is a piece of aluminium sticking out of the converter box.
    Just a query Doug, what is the grade and rating of the wires you used as I need to extend.
    Cheers Colin
    2
    Fair winds and calm waters, COLIN.
    jbkiwi
    Rear Admiral
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    Country: πŸ‡³πŸ‡Ώ New Zealand
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    Re - It was last reported that he has been seen with an accomplice Known as 'Lizard'.

    Probably that ex G.O.T dragon,- breathes fire Martin😁 possibly used to heat the boat 'torchering' prongπŸ˜‚
    JB
    2
    jbkiwi
    Rear Admiral
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    Country: πŸ‡³πŸ‡Ώ New Zealand
    Online: 6 hours ago
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    Re - You'll have to walk slowly to catch me.

    Didn't someone say once, "Walk softly (and carry a big extinguisher) when in Hereford"?😁
    JB
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